TNDM

SEC source: 0001209191-19-045769 · doc4.xml · nonDerivative · entry 1

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,991

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-19-044796 · doc4.xml · nonDerivative · entry 2

GREENE HOWARD E JR · CIK 0000903574 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 30,000

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $61.78 and $62.15.

SEC source: 0001209191-19-044796 · doc4.xml · nonDerivative · entry 1

GREENE HOWARD E JR · CIK 0000903574 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 31,675

F1 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $60.78 and $61.765.

F2 · ownership.nature: The securities are held by the Greene Family Trust.

SEC source: 0001209191-19-044804 · doc4.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 2,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F5 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-044804 · doc4.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,311

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 6, 2018.

SEC source: 0001209191-19-044804 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,311

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0000899243-19-021162 · doc4.xml · nonDerivative · entry 2

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 12,651

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on May 14, 2019.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.00 to $70.105. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F4 · ownership.nature: The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of Delphi BioInvestments VIII, L.P. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by Delphi BioInvestments VIII, L.P. and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Delphi BioInvestments VIII, L.P., except to the extent of his proportionate pecuniary interest therein.

SEC source: 0000899243-19-021162 · doc4.xml · nonDerivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,295,646

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on May 14, 2019.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.00 to $70.105. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3 · ownership.nature: The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of Delphi Ventures VIII, L.P. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by Delphi Ventures VIII, L.P. and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Delphi Ventures VIII, L.P., except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-19-044799 · doc4.xml · derivative · entry 3

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,969

Underlying: Common Stock · 5,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The option shall vest as to fifty percent (50%) of the underlying shares on 06/14/2019, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-044799 · doc4.xml · nonDerivative · entry 2

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,991

F1 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 9, 2018 and amended on May 16, 2019.

SEC source: 0001209191-19-044799 · doc4.xml · nonDerivative · entry 1

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,991

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-19-041979 · doc4.xml · derivative · entry 3

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,969

Underlying: Common Stock · 13,031 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The option shall vest as to fifty percent (50%) of the underlying shares on 06/14/2019, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-041979 · doc4.xml · nonDerivative · entry 2

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,991

F1 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 9, 2018.

SEC source: 0001209191-19-041979 · doc4.xml · nonDerivative · entry 1

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,022

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000899243-19-019620 · doc4.xml · nonDerivative · entry 2

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 12,743

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on May 14, 2019.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.00 to $70.35. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F4 · ownership.nature: The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of Delphi BioInvestments VIII, L.P. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by Delphi BioInvestments VIII, L.P. and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Delphi BioInvestments VIII, L.P., except to the extent of his proportionate pecuniary interest therein.

SEC source: 0000899243-19-019620 · doc4.xml · nonDerivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,305,025

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on May 14, 2019.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.00 to $70.35. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3 · ownership.nature: The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of Delphi Ventures VIII, L.P. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by Delphi Ventures VIII, L.P. and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Delphi Ventures VIII, L.P., except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-19-041400 · doc4.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,000

Underlying: Common Stock · 2,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F5 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-041400 · doc4.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,311

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 6, 2018.

SEC source: 0001209191-19-041400 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,311

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001209191-19-038301 · doc4.xml · derivative · entry 1

GREENE HOWARD E JR · CIK 0000903574 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,732

Underlying: Common Stock · 3,732 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-038303 · doc4.xml · derivative · entry 1

CAHILL EDWARD L · CIK 0001025665 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,732

Underlying: Common Stock · 3,732 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-038314 · doc4.xml · derivative · entry 1

Valencia Richard P. · CIK 0001743728 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,732

Underlying: Common Stock · 3,732 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-038311 · doc4.xml · derivative · entry 1

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,732

Underlying: Common Stock · 3,732 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-038308 · doc4.xml · derivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,732

Underlying: Common Stock · 3,732 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in 12 equal monthly installments commencing one month following the date of grant.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-038305 · doc4.xml · derivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,555

Underlying: Common Stock · 1,555 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-038298 · doc4.xml · derivative · entry 1

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,732

Underlying: Common Stock · 3,732 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0000899243-19-017205 · doc4.xml · nonDerivative · entry 2

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 12,872

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on May 14, 2019.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.00 to $70.35. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F4 · ownership.nature: The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of Delphi BioInvestments VIII, L.P. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by Delphi BioInvestments VIII, L.P. and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Delphi BioInvestments VIII, L.P., except to the extent of his proportionate pecuniary interest therein.

SEC source: 0000899243-19-017205 · doc4.xml · nonDerivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 1,318,243

F1 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan entered into on May 14, 2019.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.00 to $70.35. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3 · ownership.nature: The Reporting Person is a managing member of Delphi Management Partners VIII, L.L.C. ("DMP"), the general partner of Delphi Ventures VIII, L.P. As a managing member of DMP, the Reporting Person shares voting and investment power over the securities held by Delphi Ventures VIII, L.P. and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Delphi Ventures VIII, L.P., except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-19-034342 · doc4.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,000

Underlying: Common Stock · 2,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F5 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-034342 · doc4.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,311

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 6, 2018.

SEC source: 0001209191-19-034342 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,311

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001209191-19-030992 · doc4.xml · derivative · entry 5

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 10,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F7 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-030992 · doc4.xml · nonDerivative · entry 2

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,009

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2019.

F3 · price: The price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $70.35 to $70.60. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001209191-19-030992 · doc4.xml · nonDerivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,009

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001209191-19-030992 · doc4.xml · nonDerivative · entry 3

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,265

F4 · shares: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 16, 2018 through May 15, 2019. This transaction is also exempt under Rule 16b-3(c).

SEC source: 0001209191-19-030989 · doc4.xml · nonDerivative · entry 1

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,501

F1 · shares: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 16, 2018 through May 15, 2019. This transaction is also exempt under Rule 16b-3(c).

SEC source: 0001209191-19-030981 · doc4.xml · nonDerivative · entry 1

Morrison Susan · CIK 0001582970 · EVP & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,001

F1 · shares: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 16, 2018 through May 15, 2019. This transaction is also exempt under Rule 16b-3(c).

SEC source: 0001209191-19-030976 · doc4.xml · nonDerivative · entry 1

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,991

F1 · shares: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 15, 2018 through May 15, 2019. This transaction is also exempt under Rule 16b-3(c).

SEC source: 0001209191-19-030971 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,311

F1 · shares: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 16, 2018 through May 15, 2019. This transaction is also exempt under Rule 16b-3(c).

SEC source: 0001209191-19-027810 · doc4.xml · derivative · entry 4

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 70,000

Underlying: Common Stock · 10,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F6 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-027810 · doc4.xml · nonDerivative · entry 2

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,009

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2019.

F3 · price: The price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $65.00 to $65.28. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001209191-19-027810 · doc4.xml · nonDerivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,009

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001209191-19-027804 · doc4.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,000

Underlying: Common Stock · 2,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F6 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-027804 · doc4.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,765

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 6, 2018.

F3 · price: The price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $63.00 and $63.215. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001209191-19-027804 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,765

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001209191-19-027493 · doc4.xml · nonDerivative · entry 4

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 10,000

F6 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $61.2886 and $61.385.

F7 · ownership.nature: The securities are held by Allen Cornerstone Ventures L.P. The Reporting Person is the managing partner of Allen Cornerstone Ventures L.P. and may be deemed to have indirect beneficial ownership of such securities. The Reporting Person disclaims beneficial ownership of such securities held by Allen Cornerstone Ventures L.P., except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001209191-19-027493 · doc4.xml · nonDerivative · entry 3

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 40,000

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $61.145 and $61.59.

F5 · ownership.nature: The securities are held by the Allen Family Trust dated October 12, 1981.

SEC source: 0001209191-19-027493 · doc4.xml · nonDerivative · entry 2

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,500

F3 · ownership.nature: The securities are held by the Gammon Children's 2000 Trust FBO Jake Allen Gammon. The Reporting Person is co-trustee of the Gammon Children's 2000 Trust FBO Jake Allen Gammon and has shared voting and investment power over the securities held by the Gammon Children's 2000 Trust FBO Jake Allen Gammon and may be deemed to have indirect beneficial ownership of such securities. The Reporting Person disclaims beneficial ownership of such securities held by the Gammon Children's 2000 Trust FBO Jake Allen Gammon.

SEC source: 0001209191-19-027493 · doc4.xml · nonDerivative · entry 1

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,500

F1 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $61.1925 and $61.2009.

F2 · ownership.nature: The securities are held by the Gammon Children's 2000 Trust FBO Hannah Lee Gammon. The Reporting Person is co-trustee of the Gammon Children's 2000 Trust FBO Hannah Lee Gammon and has shared voting and investment power over the securities held by the Gammon Children's 2000 Trust FBO Hannah Lee Gammon and may be deemed to have indirect beneficial ownership of such securities. The Reporting Person disclaims beneficial ownership of such securities held by the Gammon Children's 2000 Trust FBO Hannah Lee Gammon.

SEC source: 0001209191-19-023629 · doc4.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,000

Underlying: Common Stock · 2,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares shall vest in twelve (12) equal monthly installments thereafter.

F5 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.